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murzikaleks [220]
3 years ago
10

Need help asap thank you..​

Mathematics
1 answer:
never [62]3 years ago
7 0

Answer:

r = 0.93

Step-by-step explanation:

The correlation coefficient gives us the "strongness" of two variables associated.

This is the value "r".

It is positive if there is strong relationship (one goes up, another goes up and vice versa)

It is negative, if one goes up and another goes down (inverse relationship)

First of all, from the scatter points, we see that as x increases, y also tend to increase. And if we were to draw a line of best fit that goes through max points, we would see the line slopes UPWARD (means as x increases, y also increase).

Thus, the value of "r" will be positive. So we can eliminate first and second choice. Now remains the other two choices

0.64

0.93

The closer the value to 1, the more that line is slopier, and less that value from 1, the line will be less "slopy".

A perfect one would be a line with slope 1, as 1 unit increase in x, the y increases 1 unit as well.

So, if we were to draw a line, we would see that it will be very close to a value of 1. The value of 0.64 can be eliminated because the points are not much "relaxed" as it should be for 0.64.

So, the correct choice is the 4th choice, r = 0.93

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Mrrafil [7]

Answer:

1.6 Miles

Step-by-step explanation:

A piece of space junk would travel 1.6 miles per second.

--Divide--

8 ÷ 5 = 1.6

7 0
3 years ago
Help me please please
Tresset [83]

Answer:

hope its help u

Step-by-step explanation:

let \: the \: angle \: be \:  \alpha  \\  \tan( \alpha )  =  \frac{p}{b}  \\  \tan(32)  =  \frac{25}{x}  \\ 0.62486=  \frac{25}{x }  \\ x =  \frac{25}{0.62486}  \\ x = 40

4 0
2 years ago
The weather forecast for the weekend is a 34% chance of rain for Saturday and a 32% chance of rain for Sunday. If we assume that
kaheart [24]

Answer:

P( A \cap B) = P(A) *P(B) = 0.34*0.32 = 0.1088

And then replacing in the total probability formula we got:

P(A \cup B) = 0.34+0.32 - 0.1088 = 0.5512

And rounded we got P(A \cup B ) = 0.551

That represent the probability that it rains over the weekend (either Saturday or Sunday)

Step-by-step explanation:

We can define the following notaton for the events:

A = It rains over the Saturday

B = It rains over the Sunday

We have the probabilities for these two events given:

P(A) = 0.34 , P(B) = 0.32

And we are interested on the probability  that it rains over the weekend (either Saturday or Sunday), so we want to find this probability:

P(A \cup B)

And for this case we can use the total probability rule given by:

P(A \cup B) = P(A) + P(B) - P(A \cap B)

And since we are assuming the events independent we can find the probability of intersection like this:

P( A \cap B) = P(A) *P(B) = 0.34*0.32 = 0.1088

And then replacing in the total probability formula we got:

P(A \cup B) = 0.34+0.32 - 0.1088 = 0.5512

And rounded we got P(A \cup B ) = 0.551

That represent the probability that it rains over the weekend (either Saturday or Sunday)

6 0
3 years ago
Please help... what is the domain of this graph?
k0ka [10]

Answer:-8,4 is ur answer

5 0
3 years ago
Which of the following statements are true about the diagram ? Please choose correct answers !!!!! Will mark Brianliest !!!!!!!!
Luden [163]

Answer:

It's none of the above

Step-by-step explanation:

GK is //

Both G & K are most definitely not the midpoints

G not the vertex of the right angle

5 0
2 years ago
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